Improvement in machines for turning and mortising hubs



UNITED 'STATES EDwINM. soOTT, OF AUBURN, NEw YORK.

IMPROVEMENT IN MACHINES FOR TURNING AND MORTISING HUBS.A

Specication forming part of Letters Patent No. 34,595, dated March 4,1862.

To all whom it may concern:

Be it known that I, EDWIN M. SCOTT, of Auburn, in the county of Cayugaand State of specification, in which-an Figure l is a transversevertical section of I my invention taken in the line Fig. 2.

Fig. 2 is a plan or top view of the same; Fig. 3, a vertical section ofa portion of the same taken in the line i/ y, Fig. 1; Fig. 4, a verticalsection of a portion of the same taken in the line 'z z, Fig. 1. v

Similar letters of reference indicate corresponding parts in the severalfigures.

The object of this invention is to obtain a machine by which hubs may beturned and then mortised to receive their spokes, the turning andmortising being performed at one operation and with the greatestfacility.

The invention consists in combining with an ordinary turning-latheaslide-rest provided with a cutter and also with a mortisingltool, theparts being so arranged that the cutter may, by asimple manipulation, beiirst made to act against the work and turn the hub in proper form andthe mortising-tool then made to act and mortise the hub.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents the bed of a turningflathe, which may be supported at anydesired height by legs or a suitable framing.

B is the stationary head, which contains the revolving mandrel C, and Dthe sliding or adjustable head, which contains the adjustablecenter-pointe. These parts being of ordinary construction, do notrequire a minute description.

The mandrel C has aloose or idle pulleyE upon it and a working pulley F,the latter having a series of holes b made in it at equal distancesapart, corresponding to the distance required between the spokesdesigned for the hub to be turned.

G is a stop, which is secured in the head B of the lathe. This stop isformed of a bar c,

pivoted at one end in the head B and provided at its opposite end with apin d, which may be fitted in anyof the holes b byadjustingthe bar ctoward the working-pulley.

On the bed Athere is placed transverselya bar H, and to this bar H thereis secured by a pivot e a bar I, on which there are two longitudinal andparallel guides f f, the guides extending the whole length of the bar I.

On the guides ff there is placed a head J, which is allowed to slidefreely on the guides, and is operated by a screw K, which passes througha nut g at the under side of the head. (See Figs. l and 3.) The outerend of the screw K is provided with a crank L, and the top of the head Jis inclined and has acutter M attached to it by screws h h, which passthrough oblong slots i 1l in the cutter, as shown clearly in Fig. 2. Thecutter M is made in the precise form of a longitudinal profile of thehub to be turned.

0n the guides f f there is placed a head N, which has a hollowrectangular chisel O secured to its inner side, said chisel containingthree angers j jj, which are connected by gearing lo. The central augerjhas its shank l extending entirely through the head N, said shank alsopassing loosely through a pulley O', which is connected with the shank Zby a feather and groove, so that the pulley may rotate the shank Z. Thepulley O is fitted in a bearing m, attached to the back end of the barI, and around the pulley O a band Ppasses, said band also passing arounda pulley Q on a shaft R, which is fitted in suitable bearings attachedto the framing which supports the bed -A of the latter.

The shaft R is driven by a belt S from the 'idle pulley -E of themandrel C.

The head N has a bar T attached to it at one side by a pivot m, and thisbar is notched near its opposite end to catch on a pin 'n at the lowerpart of the head J.

The operation is las follows: The operator or attendant places a boltand properly cen* ters it between the mandrel C and point a, the head Jbeing drawn back or outward on its ways or guides ff, and the head Nbeing shoved back to its fullest extent on said ways or guides. The stopG is thrown outward from the working-pnlley F, and the driving-beltadjusted on the working-pulley F, and the belt thereby rotated. Theoperator or attendant; by turning the screw, forces the head J, andconsequently the cutter M, toward the bolt, and the latter will beturned in the desired form. After the hub is turned, the op eratorthrows the driving-belt from the working to the idle pulley and securesthe former or prevents it from casually turning by adj usting the stopG. The bar T is then connected to the head J, and the latter movedbackward or outward from the hub, and the headN consequently movedtoward it, a mortis'e being made in the hub by the chisel O and augers jj j. The head N is then shoved outward from the hub and the latterturned the distance of a space between the holes b in the pulley F. Theoperation is then repeated, and asucceeding mortise made, and so onuntil the hub is fully mortised all around.

It will be understood that the angers 7" j j are rotated from the shaftR when the driving-be1t is adjusted on the idle pulley E. In

. case it isrequi'ed to inortise the hub oblquely for disk-shapedwheels, the bar I is moved or adjusted obliquely or angularly with thebar H, the pivot-connection e admitting of such result.

Having thus described my invention, what I claim as new, and desire tosecure by Letters'Patent, is-

The pivoted bar I, provided with the parallel guides f f and slidingheads J N, the heads being provided one with the cutter M and the otherwith the chisel O, and augersj, andthe head J operated by a screw K andconnected with the head N-by a bar T, `when required, all being arrangedand combined with a turning-lathe to operate `as and' fo the purpose setforth.

EDWIN-M. SCOTT.

Witnesses: v l

W. P. ROBINSON, JACOB R. HOW.

